Vacuum roller



FIG. 1 is a perspective view of a vacuum roller, showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is an enlarged left side thereof; and,

FIG. 7 is an enlarged right side view thereof.

The dashed lines in the drawing views depict portions of the design that form no part of the claim. 

CLAIM The ornamental design for a vacuum roller, as shown and described. 